import {mapGetters} from 'vuex'

export default {
  computed: {
    ...mapGetters('m_cart', ['total'])
  },
  onShow(){
    this.setBadge();
  },
  methods: {
    setBadge(){
      uni.setTabBarBadge({
        index: 2,
        text: this.total + '' // text只能是字符串，所以需要进行隐式转换
      })
    }
  }
}